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Finding the Fourth Proportional to 65,396.97, 89,660.01 and 64,215.99

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Solution

The fourth proportional to 65,396.97, 89,660.01 and 64,215.99 is: 88,040.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,396.97 : 89,660.01 = 64,215.99 : x
  2. Step 2: Convert to fraction form
    65,396.97/89,660.01 = 64,215.99/x
  3. Step 3: Cross multiply
    65,396.97x = 89,660.01 × 64,215.99
  4. Step 4: Simplify right side
    65,396.97x = 5,757,606,546.37
  5. Step 5: Solve for x
    x = 5,757,606,546.37/65,396.97
  6. Step 6: Final answer
    x = 88,040.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.